Terms of Use

Article 1 (Application and Consent)

1. These Terms apply to all relationships between us and users concerning use of the Service.
2. Users shall use the Service after agreeing to these Terms. Installing or using the App is deemed agreement to these Terms.
3. If you do not agree to these Terms, you may not use the Service.
4. Individual guidelines, notices, and the like that we post on the Service from time to time form part of these Terms. If these Terms conflict with an individual provision, the individual provision prevails.

Article 2 (Definitions)

In these Terms, the following terms have the following meanings.

• User Content: information such as results (match records), decks, tags, notes, images, tournament information, and profile that a user enters, registers, or uploads to the Service.
• Sharing features: collectively, share groups, tournament features, and other features for sharing User Content with, or jointly using it with, other users.
• Paid plans: the monthly or yearly billed plans that enable additional features, as set out in Article 5.

Article 3 (Accounts)

1. Some features of the Service are available by creating an account. Accounts can be created or linked via anonymous, phone number, Google account, or Apple account authentication.
2. Users shall properly manage the information used for authentication (phone number, each account's credentials, etc.) at their own responsibility, and shall not let third parties use it, or lend, transfer, or sell it.
3. Because an anonymous account is tied to the device or authentication state, linking authentication via phone number, Google, or Apple is required to carry data over after a device change. We are not responsible for data loss resulting from a failure to link.
4. Users bear responsibility for damage arising from inadequate management of authentication information, errors in use, use by third parties, and the like.

Article 4 (Handling of User Content and Data)

1. Copyright and other rights to User Content belong to the user or the rightful holder. Users warrant that they have the proper rights to post or register the User Content and that it does not infringe the rights of third parties.
2. Users grant us, free of charge, a license to use (reproduce, store, transmit, process, etc.) User Content to the extent necessary to provide, maintain, and improve the Service (including backup, cross-device sync, display through sharing features, and the statistical aggregation in the next paragraph).
3. We may create aggregated data such as deck usage and win rates by statistically aggregating users' results and the like into a form that cannot identify individuals, and display it within the Service. Users consent to this, and individuals cannot be identified from such statistically aggregated data.
4. When a user uses sharing features, the information the user shares or registers (including decks, tags, and tournament participant names and match results) is made available for viewing and use by members of the share destination or the host and participants of the tournament. The scope of information shared is determined at the user's own responsibility. The handling of information copied to share destinations is left to each user holding that information.
5. When using tournament features, the host shall conduct the content, progress, and participant handling of the tournament they run at their own responsibility, and we are not responsible for disputes arising between the host and participants.
6. We bear no obligation to back up User Content. Users shall, as needed, keep their own copies of data (e.g., CSV export).

Article 5 (Paid Plans and Billing)

1. Users can use additional features by purchasing a paid plan (monthly or yearly) that we offer. Billing and payment are processed through the Apple App Store or Google Play.
2. Unless you cancel, paid plans renew automatically in accordance with each store's rules. Please cancel or stop renewal from each store's account management screen. Uninstalling alone does not cancel a subscription.
3. Details of transaction terms such as pricing, payment method, delivery timing, and cancellation conditions follow the Specified Commercial Transactions Act disclosure (Japanese) and each store's displays.
4. If a minor purchases a paid plan, they shall do so with the consent of a person with parental authority or another statutory agent.
5. Refunds after purchase follow each store's refund policy. Except where there is a serious cause attributable to us, we do not provide direct refunds.

Article 6 (Advertising)

1. The Service may display ads from us or third parties (including ad providers). The handling of information related to ad delivery is as set out in the Privacy Policy.
2. We bear no responsibility whatsoever for transactions or communications between users and advertisers or other third parties conducted through ads on the Service.

Article 7 (Prohibited Acts)

In using the Service, users must not engage in any of the following.

• Acts that violate laws or public order and morals.
• Acts that infringe the intellectual property rights, portrait rights, privacy, reputation, or other rights or interests of us, other users, or third parties.
• Impersonating others, or registering or sharing false information.
• Sharing or obtaining information without authorization, or other improper use of sharing features.
• Reproducing, modifying, disassembling, reverse engineering, or otherwise analyzing the App.
• Placing excessive load on the Service's servers or network, or improperly accessing or obtaining information by scraping or other automated means.
• Transmitting or using harmful programs such as computer viruses.
• Interfering with the operation of the Service or damaging our credibility.
• Other acts that we reasonably determine to be inappropriate.

If we determine that a user has violated this Article, we may restrict that user's use of the Service or suspend or delete the account without prior notice.

Article 8 (Intellectual Property Rights)

Intellectual property rights to the Service and to all text, images, design, programs, trademarks, and other content we provide in connection with it belong to us or the rightful holders. Users must not reproduce, repost, publicly transmit, modify, or otherwise use these in a manner that infringes the holders' rights, without the holders' prior consent.

Article 9 (Disclaimer and No Warranty)

1. The Service is provided as is. We do not warrant that the Service is fit for a particular purpose, complete, accurate, useful, continuous, or free of errors or defects.
2. We are not responsible for damage incurred by users due to failures of communication lines or devices, suspension of third-party services, unauthorized access to computers, and the like.
3. Use of the Service is at the user's own responsibility, and except where we are willfully or grossly negligent, we are not responsible for damage incurred by users from use or inability to use the Service.
4. Even in the case of the preceding paragraph, when we bear liability for damages, the cap shall be the total amount of paid-plan fees the user paid to us in the one year immediately preceding the occurrence of the damage.

Article 10 (Changes, Suspension, and Termination of the Service)

1. We may change the content of the Service, or suspend or terminate its provision, without prior notice to users.
2. Some features of the Service (including features provided in development or as a beta) may have their timing, specifications, or names changed without notice, or be suspended or terminated. Users agree in advance to any disadvantage this entails.
3. Suspension or termination of the Service may result in the loss of the right to use paid plans or other features.
4. We are not responsible for damage incurred by users due to measures taken under the preceding paragraphs.

Article 11 (Changes to these Terms)

1. We may change these Terms in any of the following cases:
   • When the change to these Terms conforms to the general interests of users.
   • When the change to these Terms does not contradict the purpose of the contract and is reasonable in light of the necessity of the change, the appropriateness of the changed content, and other circumstances.
2. When we change these Terms, we will make the changed content and the time it takes effect known by posting on the Service or by other appropriate means.
3. If a user uses the Service after a change, they are deemed to have agreed to the amended Terms.

Article 12 (Governing Law and Jurisdiction)

1. The interpretation and application of these Terms are governed by the laws of Japan.
2. For disputes arising between us and users in connection with the Service, the Tokyo District Court shall be the court of exclusive agreed jurisdiction for the first instance.